Brush



(No Model.)

G. GRUBER.

BRUSH. No. 247,247. Patented Sept. 20,1881.

N. PETERS, Photolnhugmpher. wml nnnnnnn C.

UNITED STATES PATENT OEEicEO i GEORGE GRUBEB, OFV DETROIT, MICHIGAN.

BRUSH.

SPECIFICATION forming part of Letters Patent No. 247,247, dated September 20, 1881.

Application led June 17, 1881.

To all whom fit may concern:

Be it known that I, GEORGE GRUBER, of Detroit, in the county of Wayne and State of Michigan, have invented an Improvement in Brushes, of which the following is a specificalOD.

The nature of this invention relates to new and useful improvements in the manufacture of brushes; and the invention consists in the 1o process of manufacture and the peculiar construction and arrangement of parts, as more fully hereinafter described, and then pointed out in the claims.

Figure 1 is a perspective view of my press ready for operation. Fig. 2 is a vertical crosssection of the same in operation, and showin g the manner in which the brush-head is engaged to the ends of the bristles. Fig. 3 is a perspective of my improved brush-head. Fig.

2o 4 is a longitudinal vertical central section of my improved brush.

In the accompanying drawings, which form a part of this specification, A represents the bed of my press, provided with the end stops,

B, and the rear stop, C, the end stops limiting the length of the brush itself, while the stop l(lllimits the projection of the bristles from the ead. Y

D is the platen of my press, provided with 3o a iiange, E, upon its under side, the length of said ange being equal to the distance between the stops B, but in thickness less than the thickness of the stops B; and the two parts -A D are provided with dowels a and 3 5 holes b, which engage when the parts are put together.

F represents the bristles of which the brush is formed, which are laid upon the bed Awith their ends against the inner face of the stop 4o O, their stubs or outer ends projecting, as shown in Fig. 2, beyond the front face of the press. The space between the stops B being loosely lled with bristles, as described, the platen D is engaged by means of the dowels and holes, and any power appropriate or convenient is applied to compress the bristles be# tween the flange E and the upper face of the bed, leaving the stubs projecting, as shown in Fig. 2.

(No model.)

G is the head of the brush, made of any 5o suitablematerial, and cut `longitudinally with a circular groove, c, terminating in a rectangular groove, d, at the lower edge of the head, said grooves opening only at one end of the brush-head. The bristles being pressed in position as described, the head is engaged with the projecting stubs of the bristles, as shown in Fig. 2, one end of the grooves being stopped. After the head has been engaged in this man ner, cement which will not be affected by water is poured through thetlihnwhich is bored from the top of t e eal' to the channel or groove, until the entire space in said groove not occupied by the projecting ends of the stubs of the said bristles is filled. Care should be taken, however, to stop the other end of the groove before pouring in the cement. When the cement sets, which it will do very rapidly, the bristles will be held therein with as much certainty and with as little danger of displacement as when sewed in in the ordinary manner.

I am aware that brush-heads have been made-with grooves for holding sponges, and also for holding bristles held in metal frames, said grooves being open at both ends of the heads; and I am also aware that it is not new to make brush-knots by pressing bunches of bristles previously coated with cement into suitable formers; and therefore I do not broadly claim either of said constructions.

What I claim as my invention is- 1. The process herein described of manufacturing brushes, consisting in compressing a suitable quantity of bristles at a point near the stub ends in a suitable clamp,then sliding the ends projecting from the clamp into a brush-head having an open groove of large internal diameter, then removing the clamp, and finally securing the bristles in the head by lling the groove in the latter not already occupied with the bristles with a suitable cement, substantially as specified.

2. The brush-head G, provided with a large groove, o, and a slot, d, of smaller size opening from said groove, the groove and slot being open at one end of the head only, in combination with the bristles F, compressed at a point near their stub ends, and a suitable ee- 4. As e new article of manufacture, the ment for fastening the bristles in place, subbrush-head G, provided with a hole,e, a groove, stantiallbv as specified. c, and a slot, el, of smaller size than the groove 3. The brush-head G, provided With a large c, the groove and slot being open at one end I5 groove, c, and a slot, d, of smaller size opeuofthe block or head only, and the hole copening from seid groove, the groove and slot beinginto the groove @substantiallyais described. in open at one end of the head only in oombiation with the bristles F, compressed at a GEO' GRUBER point near their stub ends, and a plug for elos- Witnesses: ing the open end ofthe groove and slot, sub- H. S. SPRAGUE, stantially as specified. E. SCULLY. 

